Ansible practice

Dockerfile

@@ -0,0 +1,14 @@
+FROM ubuntu:22.04
+RUN apt-get update && \
+    apt-get install -y \
+    python3 -y \
+    python3-pip -y && \
+    groupadd -g 1234 notroot && \
+    useradd -m -u 1234 -g notroot notroot
+USER notroot
+WORKDIR /app
+COPY requirements.txt .
+RUN pip install -r requirements.txt
+COPY app .
+EXPOSE 5000
+CMD ["python3", "app.py"]

M1-3-Ansible/README.md

@@ -0,0 +1,36 @@
+# M1-3-1 Configuration Management
+
+## Ansible Task
+
+Create an Ansible playbook that build, push and then run the Docker image for the Python
+application. Let your playbook has the following variables:
+
+* `image_name` - contains the name of your image without the tag, i.e. `vutoff/python-app`
+* `image_tag` - contains the tag you tagged your image with, i.e. `v0.2`
+* `listen_port` - contains the listening port you're binding your app to.
+
+Make sure that you set environment variable `PORT` when you define your container
+in the Ansible playbook that takes its value from `listen_port` variable.
+
+Use Ansible modules. Do not shell out.
+
+### Requirements
+
+* Make sure you have Python installed. Any version above 3.8 would suffice.
+* The `requirements.txt` file in this directory contains the required Ansible version. Run
+
+```sh
+pip install -r requirements.txt
+```
+
+* Make sure that Docker is running on your local machine.
+
+### Mind the following
+
+* If you're running Docker Desktop or Rancher Desktop, mind the location of the `docker.sock` file. The location of the socket file is
+  * Docker Desktop - `${HOME}/.docker/run/docker.sock`
+  * Rancher DEsktop - ${HOME}/.rd/run/docker.sock
+
+* If you're using one of the above, when you write your Ansible playbook you
+must specify the path to the docker socket with the parameter `docker_host`,
+i.e. `docker_host: "unix://{{ ansible_env.HOME }}/.rd/docker.sock"`.

M1-3-Ansible/docker-playbook.yml

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+- name: Build, push and run Docker container
+  hosts: localhost
+  vars:
+    image_name: "ghristov/practice1"  
+    image_tag: "e934bdd"             
+    listen_port: 8080                
+    full_image_name: "{{ image_name }}:{{ image_tag }}"
+    dockerfile_path: "../"
+
+  tasks:
+    - name: Is Docker Python SDK installed
+      pip:
+        name: docker
+        state: present
+      become: true
+
+    - name: Is Dockerfile exists in parent dir
+      stat:
+        path: "{{ dockerfile_path }}/Dockerfile"
+      register: dockerfile_check
+
+    - name: Fail if Dockerfile is missing
+      fail:
+        msg: "Dockerfile not found"
+      when: not dockerfile_check.stat.exists
+
+    - name: Build Docker image
+      community.docker.docker_image:
+        name: "{{ image_name }}"
+        tag: "{{ image_tag }}"
+        source: build
+        build:
+          path: "{{ dockerfile_path }}"
+          pull: yes
+        force_source: yes
+        state: present
+      register: build_result
+
+    - name: Log into Docker registry
+      community.docker.docker_login:
+        username: "{{ docker_username }}"
+        password: "{{ docker_password }}"
+      when: docker_username is defined and docker_password is defined
+      register: login_result
+
+    - name: Push Docker image to registry
+      community.docker.docker_image:
+        name: "{{ full_image_name }}"
+        push: yes
+        source: local
+      when: 
+        - docker_username is defined 
+        - docker_password is defined
+        - build_result is succeeded
+      register: push_result
+
+    - name: If existing container then remove
+      community.docker.docker_container:
+        name: ansible-test
+        state: absent
+        force_kill: yes
+      ignore_errors: yes
+
+    - name: Run Docker container
+      community.docker.docker_container:
+        name: ansible-test
+        image: "{{ full_image_name }}"
+        state: started
+        recreate: yes
+        pull: false
+        ports:
+          - "{{ listen_port }}:{{ listen_port }}"
+        env:
+          PORT: "{{ listen_port | string }}"
+        restart_policy: unless-stopped
+      when: build_result is succeeded

M1-3-Ansible/requirements.txt

@@ -0,0 +1,12 @@
+ansible==10.3.0
+ansible-compat==24.9.1
+ansible-core==2.17.5
+ansible-lint==24.9.2
+blinker==1.6.3 ; python_version >= "3.10" and python_version < "4.0"
+click==8.1.7 ; python_version >= "3.10" and python_version < "4.0"
+colorama==0.4.6 ; python_version >= "3.10" and python_version < "4.0" and platform_system == "Windows"
+flask==3.0.0 ; python_version >= "3.10" and python_version < "4.0"
+itsdangerous==2.1.2 ; python_version >= "3.10" and python_version < "4.0"
+jinja2==3.1.2 ; python_version >= "3.10" and python_version < "4.0"
+markupsafe==2.1.3 ; python_version >= "3.10" and python_version < "4.0"
+werkzeug==3.0.0 ; python_version >= "3.10" and python_version < "4.0"

app/app.py

@@ -11,4 +11,4 @@ def hello_world():
 
 
 if __name__ == "__main__":
-    app.run(port=os.environ.get("PORT", 3000), host="0.0.0.0")
+    app.run(port=os.environ.get("PORT", 5000), host="0.0.0.0")

requirements.txt

@@ -1,9 +1,2 @@
-blinker==1.6.3 ; python_version >= "3.10" and python_version < "4.0"
-click==8.1.7 ; python_version >= "3.10" and python_version < "4.0"
-colorama==0.4.6 ; python_version >= "3.10" and python_version < "4.0" and platform_system == "Windows"
-flask==3.0.0 ; python_version >= "3.10" and python_version < "4.0"
-itsdangerous==2.1.2 ; python_version >= "3.10" and python_version < "4.0"
-jinja2==3.1.2 ; python_version >= "3.10" and python_version < "4.0"
-markupsafe==2.1.3 ; python_version >= "3.10" and python_version < "4.0"
-werkzeug==3.0.0 ; python_version >= "3.10" and python_version < "4.0"
 
+flask==3.0.0